Was on original settings 700 M and work fine no overclock .(overclocking void the warranty)
All 135 chips work fine 10 days .
The PSU is on 228 W -50 Hz
Thank you for help
If you haven't already, try a hard reboot sometimes that helps. If that doesn't help, contact Bitmain you may have a bad board.
I would agree send in a request for RMA -
info@bitmaintech.com . Include troubleshooting you have done and resuts, to try to save time.
Also don't open the machine or try anything like that as that voids warranty anymore. But they should tell you what to do after email.